find the range and standard deviation, round to two decimals places:
The table below gives the number of hours spent watching TV last week by a sample of 24 children.
22 | 84 | 62 | 63 | 37 | 38 |
33 | 42 | 60 | 26 | 44 | 37 |
50 | 41 | 26 | 23 | 47 | 47 |
49 | 57 | 67 | 46 | 96 |
18
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